Improvement in corn-ploughs



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74ro ALL WHoM I'r MAY ooNeERN: i

Be it known that I, A. CANFIELD, of Lyons, Clinton county, and Stute ofIowa, have invented anew and usefull Improvement in 0ne-HorseColn-Plougils; and I do hereby dechire that the following is a full andexact description thereof, reference being had lto the accompanyingdrawings and to the letters of reference marked ltihereon. v

The nature of iny invention consists in so constructing an ironone-horse corn-plough that it may be t adjusted to any 're'quired widthfor convenience of working among corn; also to be so arranged as toadmit of billing up the corn or turning the earth from it.furtlrerconvenience I have arranged; that is, to change the nu'mb'er ofshovels at will, making the plough eue, two, or three shovels, therebyadjusting it to the amount of work to be performed.

To enable others to make-and use my invention, I willproceed to describeits construction audits operation. I construct the beam of iron in theusual marinier, but having a. joint'at B B. This joint is made with an'open link, as shown at B, Figures 1, 2, vand 3. I construct a slottedbarr fitted with clamps, as shown at D, and also a. stay-bnr, K; 'theseare rt-o 'confine the movable beams to any angle, as shown bythe dottedlines N. I

futtucll the s hovelSG F L, also the handles I'I, in the ordinaryrnauuer, claiming no patent'therefor.

New the operation of this adjustable` one-horse corn-plough will at oncebe vseen by examining its parts. I will, however, carefully `describet-le same that it may be the more readily understood. v

Now if it be desired to setthe shovels Iwide to hill. up the corn, I puttheoutside shovels L and G so that theangle of the shovel will cast theearth towards the corn. Then l put in the open .link B B, lay on the barD, put on the clamps E E through the slot MM, and firmlytightembyturning down the nuts in'said clamps. I` insert the stay-bar K into ainert-isc in the handle H H, and then through holes in hzindle and barinsert the pins J. Now it will be seen that these 4bars elfectually andfirmly hold the shovels to their places. If I wish to narrow th'e ploughloosen the clamps E E, and lremove `the pins J J, I bring the beams A Atoward each other to the requlireclwidth, tighten the nuts, insert thepins J J, and it is done. If I wish to east the earth' frorn the corn,Ijust looseu the clamp E E, remove thepins J J and the open links B B,and change-the beams, setting the shovels so that the'angle ormould-board will cast `the earth from the corn, readjust the clainp andpins, and the change is made quickly and el'ectually,

What I claim as my'inventiou, and desire to secure ,by Letters Patent,is- The-adjustable beams A A, withjoint at B, andthe open link C. Alsothe slotted b ar D, with the clamps EE, when constructed, arranged, andoperating substantially as and'for the purposes above set forth anddescribed.

ANDREW GANFIELD.

Witnesses:

G. PET'roN, JN0. W. McLEon.

